CN115949378A - Filling tool for oilfield operation - Google Patents

Abstract

The invention provides a filling tool for oilfield operation, and relates to the field of oilfield operation. This a fill instrument for oil field operation, including basic body subassembly, filling body subassembly and protection body subassembly, filling body subassembly sets up the middle part at basic body subassembly, filling body subassembly can use the axial central line of basic body subassembly as the rotatory blowout of centre of a circle and fill with taking the sand-laden liquid, protection body subassembly cover is established in basic body subassembly outside and will fill including the body subassembly parcel. Fill with carrying sand liquid through the rotatory blowout of center tube to spout position relatively fixed among the prior art has been avoided, and then the problem of the degree of consistency that the influence was carried sand liquid and was filled, through protection body subassembly design, when the condition that the wall of a well collapsed, can block the sand bridge outside through the grid, avoided the direct shutoff spout of sand bridge to interrupt by force and filled the condition of operation, also avoided the impaired problem of structure of center tube, nozzle simultaneously.

Description

Filling tool for oilfield operation

Technical Field

The invention relates to the technical field of oilfield operation, in particular to a filling tool for oilfield operation.

Background

In the conventional gravel packing sand prevention, for deep water oil and gas field gravel packing, open hole well gravel packing or long horizontal well gravel packing, due to irregular local well bores, stratum collapse, early sand bridges and the like, the local well section cannot be packed in a real way, a stable and compact gravel packing layer cannot be formed, the sand prevention effect is influenced, and even the sand prevention failure is caused.

In the oil well, because the problem of geology in the annular space between oil pipe column and the wall of a well, under the environment of high pressure filling operation, easily cause the wall of a well to fall down, thereby the sand bridge blocks up the condition that the spout interrupts the filling operation by force, for this reason, this application designs a filling instrument for oil field operation, it can be when the condition that the wall of a well collapses, block the sand bridge through the grid outside, avoided the condition that the direct shutoff spout of sand bridge interrupts the filling operation by force, rotatory blowout is filled with taking sand liquid simultaneously, spout position relatively fixed among the prior art has been avoided, and then the influence is taken the degree of consistency that sand liquid filled, lead to the lower problem of work efficiency.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a filling tool for oil field operation, which solves the problems that the wall of an oil well collapses to further plug a sand-carrying liquid outlet and the filling operation is forcibly interrupted when the existing oil well is filled.

In order to realize the purpose, the invention is realized by the following technical scheme: the utility model provides a fill instrument for oil field operation, includes basic body subassembly, fills body subassembly and protection body subassembly, fill the middle part that the body subassembly set up at basic body subassembly, fill the body subassembly and can use the axial central line of basic body subassembly as the rotatory blowout of centre of a circle and fill with taking the sand liquid, protection body subassembly cover is established in basic body subassembly outside and will be filled including the body subassembly parcel.

Preferably, the basic pipe body assembly comprises an upper main pipe, an upper connecting pipe is mounted above the outer portion of the upper main pipe, a closing pipe is arranged inside the upper main pipe, an upper caulking groove is formed in the periphery of the side face of the bottom of the upper main pipe, and an upper annular groove is formed in the periphery of the bottom end opening of the upper main pipe;

the basic pipe body assembly further comprises a lower main pipe, a lower connecting pipe is installed below the outer portion of the lower main pipe, a lower caulking groove is formed in the periphery of the side face of the top of the lower main pipe, and a lower annular groove is formed in the periphery of the top end opening of the lower main pipe.

Preferably, pack the body subassembly and include the center tube, top port a week of center tube is provided with the sliding ring, the outside setting of going up the sliding ring is in the inside of last annular and can slide each other, bottom port a week of center tube is provided with down the sliding ring, the outside setting of sliding ring is in the inside of annular and can slide each other down.

Preferably, the inner two sides of the central tube are provided with nozzles, the outer two sides of the central tube are provided with nozzles which are communicated with the nozzles in a one-to-one correspondence manner, and the outer side ports of the nozzles at the two sides are oriented to be symmetrical about the center point of the central tube.

Preferably, first buckle hoop is all installed to the top both sides of center tube, both sides first buckle hoop's inboard top all is provided with the protruding portion, both sides the outside of protruding portion sets up respectively in the inside both sides of last caulking groove and can slide each other, the bottom both sides of center tube are all installed and are detained hoop, both sides half inboard bottom of detaining the hoop down all is provided with another protruding portion, both sides the outside of another protruding portion sets up respectively in the inside both sides of caulking groove under and can slide each other.

Preferably, protection body subassembly includes protective case and sleeve pipe seat, the internally mounted of protective case is in the outside top of being responsible for under, the middle part of protective case is provided with the grid that supplies to fill with taking the circulation of sand liquid, the top mouth a week of protective case evenly is provided with a plurality of mouth of pipe dogtooths, the internally mounted of sleeve pipe seat is in the outside middle part of being responsible for at last, the bottom mouth of sleeve pipe seat is provided with a plurality of spacing dogtooths, crisscross setting between spacing dogtooths and the mouth of pipe dogtooths.

Preferably, the protection tube body assembly further comprises two half hoops, the upper sides of the half hoops are respectively installed on two sides of the lower portion of the outer portion of the sleeve tube seat through bolts, and the lower sides of the half hoops are respectively installed on two sides of the upper portion of the outer portion of the protection sleeve through bolts.

The working principle is as follows: the tool is connected with the existing oil pipe column through an upper connecting pipe and a lower connecting pipe and is put into an oil well until the tool is put down to a filling position, then a plugging tool is put into the oil pipe column by utilizing the prior art, when the plugging tool is limited at the bottom of the tool, a sand carrying liquid for filling is injected into the oil pipe column by utilizing the prior art, the sand carrying liquid is sprayed out from nozzles at two sides inside the central pipe under the blocking of the plugging tool and is sprayed out from the outer ports of the nozzles at two sides, so that the oil well is filled, simultaneously, under the action of the reaction force of the sprayed sand carrying liquid, the central pipe has a lateral acting force, the problem that the nozzle position is relatively fixed in the prior art, the filling uniformity of the sand carrying liquid is influenced, the working efficiency is low is further solved, an annular central pipe between the central pipe and the central pipe in the oil well is rotatably sprayed out as a circle center under the lateral acting force, the problem that the nozzle is easy to be filled in a well wall of a grid for blocking operation when the annular space between the central pipe and the well wall is collapsed is arranged outside a grid, and the grid assembly is filled freely, and the grid assembly is arranged outside a well wall of the well wall, so that the grid assembly is easy to be filled, the grid assembly is blocked, and the well wall is blocked, and the grid assembly is arranged, and the grid assembly can be blocked, and the well wall of the well wall can be blocked, and can be blocked, the well wall of the well, the condition that the direct shutoff spout of sand bridge interrupts the filling operation by force has been avoided, the damaged problem of structure of also having avoided center tube, nozzle simultaneously.

The invention provides a filling tool for oilfield operation. The method has the following beneficial effects:

1. the central pipe can rotationally spray filling sand-carrying fluid out by taking the axial central line of the main pipe as the center of a circle under the action of a lateral acting force, so that the problem of lower working efficiency caused by the relative fixed nozzle position in the prior art and further the influence on the filling uniformity of the sand-carrying fluid is solved.

2. According to the invention, through the design of the protective pipe body assembly which is sleeved outside the basic pipe body assembly and wraps the filling pipe body assembly, when the well wall collapses, the sand bridge can be blocked outside through the grating, the condition that the sand bridge directly blocks the nozzle to forcibly interrupt the filling operation is avoided, and meanwhile, the problem that the structures of the central pipe and the nozzle are damaged is also avoided.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2;

FIG. 4 is a schematic view from another perspective of the structure of FIG. 3;

FIG. 5 is a schematic view of the protective tube and the tube seat of the present invention;

FIG. 6 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 1;

fig. 8 is a schematic cross-sectional view taken at C-C in fig. 1.

Wherein, 1, an upper main pipe; 2. an upper caulking groove; 3. an upper ring groove; 4. closing the tube; 5. an upper connecting pipe; 6. a lower main pipe; 7. a lower caulking groove; 8. a lower ring groove; 9. a lower connecting pipe; 10. a central tube; 11. an upper slip ring; 12. a lower slip ring; 13. a spout; 14. a nozzle; 15. an upper half buckle hoop; 16. a lower half buckle hoop; 17. protecting the sleeve; 18. pipe orifice convex teeth; 19. a casing tube seat; 20. limiting convex teeth; 21. and (5) half hoop.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 8, an embodiment of the present invention provides a filling tool for oilfield operations, including a basic pipe assembly, a filling pipe assembly and a protection pipe assembly, wherein the filling pipe assembly is disposed in a middle portion of the basic pipe assembly, the filling pipe assembly can rotationally eject a sand-carrying fluid for filling with an axial center line of the basic pipe assembly as a circle center, and the protection pipe assembly is sleeved outside the basic pipe assembly and wraps the filling pipe assembly.

Specifically, the basic pipe body assembly comprises an upper main pipe 1, an upper connectingpipe 5 is installed above the outside of the upper main pipe 1, in this embodiment, the top of the upper main pipe 1 is used for being connected with an existing oil pipe column, a closing pipe 4 is arranged inside the upper main pipe 1, an upper caulking groove 2 is formed in a circle of the side face of the bottom of the upper main pipe 1, an upperannular groove 3 is formed in a circle of the bottom end opening of the upper main pipe 1, as shown in fig. 6, a protruding edge is arranged above the outside of the closing pipe 4, the inside of the upper main pipe 1 is a diameter-variable pipe cavity, specifically, the diameter of the upper pipe diameter is consistent with that of the protruding edge of the closing pipe 4, the lower pipe diameter is consistent with that of the closing pipe 4, the closing pipe 4 is connected with the upper main pipe 1 through a breakable pin, when the outlet of the sand-carrying liquid needs to be closed after filling operation is completed, the breakable pin is broken through pressure, the closing pipe 4 further moves downwards until the protruding edge of the closing pipe 4 is embedded in the inside pipe cavity of the upper main pipe 1, and then plugging and the filling operation can be completed.

Further, basic body subassembly still includes and is responsible for 6 down, and connectingpipe 9 is installed down to the outside below of being responsible for 6 down, and in this embodiment, the bottom of connectingpipe 9 is used for connecting sand control screen pipe down, and current oil pipe column for the well is connected to the bottom of sand control screen pipe, and caulking groove 7 has been seted up down to the top side of being responsible for 6 down a week, and annular groove 8 has been seted up down to the top mouth a week of being responsible for 6 down.

Specifically, pack the body subassembly and includecenter tube 10, and top port a week ofcenter tube 10 is provided withslip ring 11, and the outside setting of going upslip ring 11 is in the inside of last annular 3 and can slide each other, and bottom port a week ofcenter tube 10 is provided withslip ring 12 down, and the outside setting ofslip ring 12 is in the inside of annular 8 and can slide each other down.

Further,spouts 13 are respectively arranged on two sides of the inside of thecentral tube 10,nozzles 14 are respectively arranged on two sides of the outside of thecentral tube 10, thenozzles 14 are communicated with thespouts 13 in a one-to-one correspondence manner, and the outer side end openings of thenozzles 14 on two sides are in central symmetry about the central point of thecentral tube 10.

Further,first buckle hoop 15 is all installed to the top both sides ofcenter tube 10, andfirst buckle hoop 15's inboard top on both sides all is provided with the protruding portion, and the outside of both sides protruding portion sets up respectively in the inside both sides of last caulking groove 2 and can slide each other, andfirst buckle hoop 16 is all installed to the bottom both sides ofcenter tube 10, and the inboard bottom offirst buckle hoop 16 in both sides all is provided with another protruding portion, and the outside of another protruding portion in both sides sets up respectively in the inside both sides of caulking groove 7 down and can slide each other.

In this embodiment, can realize basic body subassembly through above-mentioned design, pack the dismouting of being convenient for between the body subassembly, specifically do, go upring channel 3, go up theclamping ring 11 and lower ring channel 8,lower clamping ring 12 has restricted the rotational position ofcenter tube 10, just can only regard the axial centerline of being responsible for 1 above as the centre of a circle rotation promptly, simultaneously through the buckle effect of thefirst buckle hoop 15 ofcenter tube 10 top installation with last caulking groove 2, the buckle effect of thesecond buckle hoop 16 ofcenter tube 10 below installation with lower caulking groove 7, can realizecenter tube 10 and last person in charge 1, lower person incharge 6 between not drop each other, ensure instrument steady operation.

In this embodiment, the tool is connected with an existing tubing string through an upper connectingpipe 5 and a lower connectingpipe 9 and is lowered into an oil well until the tool is lowered to a filling position, then a plugging tool is put into the tubing string by using the prior art, when the tool to be plugged is limited at the bottom of the tool, a filling sand-carrying fluid is injected into the tubing string by using the prior art, the sand-carrying fluid is ejected fromnozzles 13 on two sides inside acentral pipe 10 under the blocking of the plugging tool and is ejected from outer ports ofnozzles 14 on two sides, so that the oil well is filled, meanwhile, under the action of the reaction force of the ejected sand-carrying fluid, thecentral pipe 10 has a lateral acting force, because the outer part of an upper slidingring 11 is arranged inside anupper ring groove 3 and can slide with each other, the outer part of a lower slidingring 12 is arranged inside a lower ring groove 8 and can slide with each other, so that thecentral pipe 10 can rotatably eject the filling sand-carrying fluid by using the axial center line of the upper main pipe 1 as the center of a circle under the lateral acting force, thereby avoiding the problem that the positions of thenozzles 13 in the prior art are relatively fixed and the uniformity of the filling sand-carrying fluid is affected, which results in lower working efficiency.

Specifically, protection body subassembly includesprotective sleeve 17 andsleeve pipe seat 19,protective sleeve 17's internally mounted is in the outside top of being responsible for 6 down,protective sleeve 17's middle part is provided with the grid that supplies to fill with taking the circulation of sand liquid,protective sleeve 17's top port a week evenly is provided with a plurality of mouth ofpipe dogtooths 18,sleeve pipe seat 19's internally mounted is in the outside middle part of being responsible for 1 at last,sleeve pipe seat 19's bottom port is provided with a plurality ofspacing dogtooths 20, crisscross setting between spacing dogtooths 20 and the mouth ofpipe dogtooth 18.

Further, the protection tube body assembly further comprises twohalf hoops 21, the upper sides of thehalf hoops 21 are respectively installed on two sides of the lower portion of the outer portion of thesleeve tube seat 19 through bolts, and the lower sides of thehalf hoops 21 are respectively installed on two sides of the upper portion of the outer portion of theprotection sleeve 17 through bolts.

In this embodiment, can realize the connection stability between two parts of upper and lower basic body subassemblies through above-mentioned design, realize the purpose of the dismouting of being convenient for, simultaneously also can form the protection to the inside filling body subassembly, specifically do,protective case 17 links firmly with the outside of being responsible for 6 down,sleeve pipe seat 19 links firmly with the outside of being responsible for 1 on,protective case 17, throughcrisscross spacing dogtooth 20 and the mouth ofpipe dogtooth 18 that sets up between thesleeve pipe seat 19, can realize when this instrument is rotatory to go into the well, the atress between two parts of upper and lower basic body subassemblies is unanimous, secondly, link to each other betweensleeve pipe seat 19 andprotective case 17 through halfstaple bolt 21, separation between two parts of upper and lower basic body subassemblies has been avoided, also can reduce the atress degree of inside filling body subassembly through the two parts of upper and lower basic body subassemblies are connected to the protective body subassembly, avoid structural deformation, ensure thatcenter tube 10 can be smooth rotation all the time.

In this embodiment, according to actual conditions, in the oil well, because the geological problem in the annular space between oil pipe column and the wall of a well, under the environment of high pressure filling operation, the wall of a well collapses easily to the sand bridge blocks up the condition that spout 13 interrupts the filling operation by force, for this reason, integrated protection body subassembly design in this instrument, its cover is established in the outside of basic body subassembly and will fill including the body subassembly parcel, specificprotective case 17's middle part is provided with the grid that supplies to fill with carrying the circulation of sand liquid, and still keep the space that can supplycenter tube 10,nozzle 14 free rotation in the inside of this grid, so, when the condition that the wall of a well collapses appears, can block the sand bridge outside through the grid, avoided thedirect shutoff spout 13 of sand bridge to interrupt the condition of filling operation by force, also avoided the damaged problem ofcenter tube 10,nozzle 14's structure simultaneously.

Example two:

the embodiment of the invention provides a filling tool for oilfield operation, which comprises a basic pipe body assembly, a filling pipe body assembly and a protection pipe body assembly, wherein the filling pipe body assembly is arranged in the middle of the basic pipe body assembly, the filling pipe body assembly can rotationally spray filling sand-carrying liquid by taking the axial center line of the basic pipe body assembly as a circle center, and the protection pipe body assembly is sleeved outside the basic pipe body assembly and wraps the filling pipe body assembly.

Specifically, the basic pipe assembly includes an upper main pipe 1, an upper connecting pipe 5 is installed above the outside of the upper main pipe 1, in this embodiment, the top of the upper main pipe 1 is used for connecting to an existing oil string, a closing pipe 4 is installed inside the upper main pipe 1, an upper caulking groove 2 is formed on a periphery of the bottom side of the upper main pipe 1, an upper annular groove 3 is formed on a periphery of the bottom port of the upper main pipe 1, as shown in fig. 6, a protruding edge is arranged above the outside of the closing pipe 4, the inside of the upper main pipe 1 is a diameter-variable pipe cavity, specifically, the diameter of the upper pipe is consistent with that of the outside protruding edge of the closing pipe 4, the diameter of the lower pipe is consistent with that of the closing pipe 4, the closing pipe 4 is connected to the upper main pipe 1 through a breakable pin, when the filling operation is completed and the outlet of the sand-carrying fluid needs to be closed, the breakable pin is broken through pressure, and the closing pipe 4 is further moved downward until the protruding edge of the outside of the closing pipe 4 is embedded in the inside pipe cavity of the upper main pipe 1, at this time, the plugging and the filling operation can be realized.

Further, the basic pipe body assembly further comprises a lowermain pipe 6, a lower connectingpipe 9 is installed below the outer portion of the lowermain pipe 6, the bottom of the sand control screen pipe is connected with an existing oil pipe column for well descending, a lower caulking groove 7 is formed in one circle of the side face of the top of the lowermain pipe 6, and a lower annular groove 8 is formed in one circle of the top end opening of the lowermain pipe 6.

In this embodiment, the bottom of the lower connectingpipe 9 of the filling tool is used for connecting the upper main pipe 1 of another filling tool, and the upper connectingpipe 5 of the corresponding another filling tool is removed, so that the filling tools can be arranged into a plurality of groups to improve the filling efficiency.

Specifically, pack the body subassembly and includecenter tube 10, and top port a week ofcenter tube 10 is provided withslip ring 11, and the outside setting of going upslip ring 11 is in the inside oflast annular 3 and can slide each other, and bottom port a week ofcenter tube 10 is provided withslip ring 12 down, and the outside setting ofslip ring 12 is in the inside of annular 8 and can slide each other down.

Further, spouts 13 have all been seted up to the inside both sides ofcenter tube 10, andnozzle 14 and spout 13 one-to-one are linked together all to the outside both sides ofcenter tube 10, and the outside port orientation of bothsides nozzle 14 is symmetrical about the central point center ofcenter tube 10.

Further,first buckle hoop 15 is all installed to the top both sides ofcenter tube 10, andfirst buckle hoop 15's inboard top on both sides all is provided with the protruding portion, and the outside of both sides protruding portion sets up respectively in the inside both sides of last caulking groove 2 and can slide each other, andfirst buckle hoop 16 is all installed to the bottom both sides ofcenter tube 10, and the inboard bottom offirst buckle hoop 16 in both sides all is provided with another protruding portion, and the outside of another protruding portion in both sides sets up respectively in the inside both sides of caulking groove 7 down and can slide each other.

In this embodiment, can realize basic body subassembly through above-mentioned design, pack the dismouting of being convenient for between the body subassembly, specifically do, go upring channel 3, go up the clampingring 11 and lower ring channel 8,lower clamping ring 12 has restricted the rotational position ofcenter tube 10, just can only regard the axial centerline of being responsible for 1 above as the centre of a circle rotation promptly, simultaneously through the buckle effect of thefirst buckle hoop 15 ofcenter tube 10 top installation with last caulking groove 2, the buckle effect of thesecond buckle hoop 16 ofcenter tube 10 below installation with lower caulking groove 7, can realizecenter tube 10 and last person in charge 1, lower person incharge 6 between not drop each other, ensure instrument steady operation.

In this embodiment, the tool is connected with an existing tubing string through an upper connecting pipe 5 and a lower connecting pipe 9 and is lowered into an oil well until the tool is lowered to a filling position, then a plugging tool is put into the tubing string by using the prior art, when the tool to be plugged is limited at the bottom of the tool, a filling sand-carrying fluid is injected into the tubing string by using the prior art, the sand-carrying fluid is ejected from nozzles 13 on two sides inside a central pipe 10 under the blocking of the plugging tool and is ejected from outer ports of nozzles 14 on two sides, so that the oil well is filled, meanwhile, under the action of the reaction force of the ejected sand-carrying fluid, the central pipe 10 has a lateral acting force, because the outer part of an upper sliding ring 11 is arranged inside an upper ring groove 3 and can slide with each other, the outer part of a lower sliding ring 12 is arranged inside a lower ring groove 8 and can slide with each other, so that the central pipe 10 can rotatably eject the filling sand-carrying fluid by using the axial center line of the upper main pipe 1 as the center of a circle under the lateral acting force, thereby avoiding the problem that the positions of the nozzles 13 in the prior art are relatively fixed and the uniformity of the filling sand-carrying fluid is affected, which results in lower working efficiency.

Specifically, protection body subassembly includesprotective sleeve 17 andsleeve pipe seat 19,protective sleeve 17's internally mounted is in the outside top of being responsible for 6 down,protective sleeve 17's middle part is provided with the grid that supplies to fill with taking the circulation of sand liquid,protective sleeve 17's top port a week evenly is provided with a plurality of mouth ofpipe dogtooths 18,sleeve pipe seat 19's internally mounted is in the outside middle part of being responsible for 1 at last,sleeve pipe seat 19's bottom port is provided with a plurality ofspacing dogtooths 20, crisscross setting between spacing dogtooths 20 and the mouth ofpipe dogtooth 18.

Further, the protection tube body assembly further comprises twohalf hoops 21, the upper sides of thehalf hoops 21 are respectively installed on two sides of the lower portion of the outer portion of thesleeve tube seat 19 through bolts, and the lower sides of thehalf hoops 21 are respectively installed on two sides of the upper portion of the outer portion of theprotection sleeve 17 through bolts.

In this embodiment, can realize the connection stability between two parts of upper and lower basic body subassemblies through above-mentioned design, realize the purpose of the dismouting of being convenient for, simultaneously also can form the protection to the inside filling body subassembly, specifically do,protective case 17 links firmly with the outside of being responsible for 6 down,sleeve pipe seat 19 links firmly with the outside of being responsible for 1 on,protective case 17, throughcrisscross spacing dogtooth 20 and the mouth ofpipe dogtooth 18 that sets up between thesleeve pipe seat 19, can realize when this instrument is rotatory to go into the well, the atress between two parts of upper and lower basic body subassemblies is unanimous, secondly, link to each other betweensleeve pipe seat 19 andprotective case 17 through halfstaple bolt 21, separation between two parts of upper and lower basic body subassemblies has been avoided, also can reduce the atress degree of inside filling body subassembly through the two parts of upper and lower basic body subassemblies are connected to the protective body subassembly, avoid structural deformation, ensure thatcenter tube 10 can be smooth rotation all the time.

In this embodiment, according to actual conditions, in the oil well, because the geological problem in the annular space between oil pipe column and the wall of a well, under the environment of high pressure filling operation, the wall of a well collapses easily to the sand bridge blocks up the condition that spout 13 interrupts the filling operation by force, for this reason, integrated protection body subassembly design in this instrument, its cover is established in the outside of basic body subassembly and will fill including the body subassembly parcel, specificprotective case 17's middle part is provided with the grid that supplies to fill with carrying the circulation of sand liquid, and still keep the space that can supplycenter tube 10,nozzle 14 free rotation in the inside of this grid, so, when the condition that the wall of a well collapses appears, can block the sand bridge outside through the grid, avoided thedirect shutoff spout 13 of sand bridge to interrupt the condition of filling operation by force, also avoided the damaged problem ofcenter tube 10,nozzle 14's structure simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a fill instrument for oil field operation, includes basic body subassembly, fills body subassembly and protection body subassembly, its characterized in that: the filling pipe body assembly is arranged in the middle of the basic pipe body assembly, the filling pipe body assembly can rotationally spray and fill sand carrying liquid by taking the axial center line of the basic pipe body assembly as a circle center, and the protective pipe body assembly is sleeved outside the basic pipe body assembly and wraps the filling pipe body assembly.

2. The packing tool for use in oilfield operations of claim 1, wherein: the foundation pipe body assembly comprises an upper main pipe (1), an upper connecting pipe (5) is arranged above the outer part of the upper main pipe (1), a closing pipe (4) is arranged inside the upper main pipe (1), an upper caulking groove (2) is formed in one circle of the side face of the bottom of the upper main pipe (1), and an upper annular groove (3) is formed in one circle of the bottom end opening of the upper main pipe (1);

basic body subassembly still includes and is responsible for (6) down, be responsible for the outside below of (6) down and install down connecting pipe (9), caulking groove (7) have been seted up down to the top side a week of being responsible for (6) down, annular (8) have been seted up down to the top mouth a week of being responsible for (6) down.

3. A packing tool for use in oilfield operations as defined in claim 2, wherein: fill body subassembly and include center tube (10), top port a week of center tube (10) is provided with slip ring (11), the outside of going up slip ring (11) sets up in the inside of last annular (3) and can slide each other, bottom port a week of center tube (10) is provided with down slip ring (12), the outside setting of slip ring (12) is in the inside of annular (8) and can slide each other down.

4. A packing tool for use in oilfield operations as defined in claim 3, wherein: spout (13) have all been seted up to the inside both sides of center tube (10), nozzle (14) just are all installed to the outside both sides of center tube (10) nozzle (14) with spout (13) one-to-one is linked together, both sides the outside end mouth of nozzle (14) points to about the central point central symmetry of center tube (10).

5. The packing tool for use in oilfield operations of claim 4, wherein: the top both sides of center tube (10) are all installed first buckle hoop (15), both sides the inboard top of first buckle hoop (15) all is provided with the protruding portion, both sides the outside of protruding portion sets up respectively in the inside both sides of last caulking groove (2) and can slide each other, first buckle hoop (16) are all installed down to the bottom both sides of center tube (10), both sides the inboard bottom of first buckle hoop (16) all is provided with another protruding portion, both sides the outside of another protruding portion sets up respectively in the inside both sides of caulking groove (7) under and can slide each other.

6. The packing tool for use in oilfield operations of claim 5, wherein: protection body subassembly includes protective sleeve (17) and sleeve pipe seat (19), the internally mounted of protective sleeve (17) is in the outside top of being responsible for (6) down, the middle part of protective sleeve (17) is provided with the grid that supplies to fill with taking the sand liquid circulation, the top port a week of protective sleeve (17) evenly is provided with a plurality of mouth of pipe dogtooths (18), the internally mounted of sleeve pipe seat (19) is in the outside middle part of being responsible for (1) at last, the bottom mouth of sleeve pipe seat (19) is provided with a plurality of spacing dogtooths (20), crisscross setting between spacing dogtooths (20) and mouth of pipe dogtooths (18).

7. The packing tool for use in oilfield operations of claim 6, wherein: the protective pipe body assembly further comprises two half hoops (21), the upper sides of the half hoops (21) are respectively installed on two sides of the lower portion of the outer portion of the sleeve pipe seat (19) through bolts, and the lower sides of the half hoops (21) are respectively installed on two sides of the upper portion of the outer portion of the protective sleeve (17) through bolts.

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